Question

我正在尝试使用预训练的 faster_rcnn_inception_resnet_v2_atrous_oid 。代码是从官方Quick Start笔记本修改的。当我使用其他模型，如 faster_rcnn_nas_coco_2017_11_08 时，一切正常。但是，当我更改为 faster_rcnn_inception_resnet_v2_atrous_oid 时，出现以下错误：

runfile('D:/python/tf/models-master/research/object_detection/Learn_faster.py', wdir='D:/python/tf/models-master/research/object_detection')
Reloaded modules: utils, utils.label_map_util, utils.visualization_utils
downloaded
Traceback (most recent call last):

  File "e:\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 2898, in run_code
    self.showtraceback()

  File "e:\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 1826, in showtraceback
    self._showtraceback(etype, value, stb)

  File "e:\Anaconda3\lib\site-packages\ipykernel\zmqshell.py", line 554, in _showtraceback
    dh.parent_header, ident=topic)

  File "e:\Anaconda3\lib\site-packages\jupyter_client\session.py", line 712, in send
    to_send = self.serialize(msg, ident)

  File "e:\Anaconda3\lib\site-packages\jupyter_client\session.py", line 607, in serialize
    content = self.pack(content)

  File "e:\Anaconda3\lib\site-packages\jupyter_client\session.py", line 103, in <lambda>
    ensure_ascii=False, allow_nan=False,

  File "e:\Anaconda3\lib\site-packages\zmq\utils\jsonapi.py", line 43, in dumps
    s = s.encode('utf8')

UnicodeEncodeError: 'utf-8' codec can't encode character '\udcd5' in position 2098: surrogates not allowed

代码是：

import numpy as np
import os
import six.moves.urllib as urllib
import tarfile
import tensorflow as tf

from matplotlib import pyplot as plt
from PIL import Image

if tf.__version__ != '1.4.0':
  raise ImportError('Please upgrade your tensorflow installation to v1.4.0!')

from utils import label_map_util

from utils import visualization_utils as vis_util


# What model to download.
MODEL_NAME = 'faster_rcnn_inception_resnet_v2_atrous_oid_2017_11_08'#'faster_rcnn_nas_coco_2017_11_08'#'faster_rcnn_resnet101_coco_2017_11_08' #'faster_rcnn_nas_coco_2017_11_08' 'rfcn_resnet101_coco_2017_11_08'# , , 'ssd_inception_v2_coco_2017_11_08'
MODEL_FILE = MODEL_NAME + '.tar.gz'
DOWNLOAD_BASE = 'http://download.tensorflow.org/models/object_detection/'

# Path to frozen detection graph. This is the actual model that is used for the object detection.
PATH_TO_CKPT = MODEL_NAME + '/frozen_inference_graph.pb'

# List of the strings that is used to add correct label for each box.
PATH_TO_LABELS = os.path.join('data', 'oid_bbox_trainable_label_map')#'mscoco_label_map.pbtxt')

NUM_CLASSES = 545


opener = urllib.request.URLopener()
opener.retrieve(DOWNLOAD_BASE + MODEL_FILE, MODEL_FILE)
print("downloaded")
tar_file = tarfile.open(MODEL_FILE)
for file in tar_file.getmembers():
  file_name = os.path.basename(file.name)
  if 'frozen_inference_graph.pb' in file_name:
    tar_file.extract(file, os.getcwd())



detection_graph = tf.Graph()
with detection_graph.as_default():
  od_graph_def = tf.GraphDef()
  with tf.gfile.GFile(PATH_TO_CKPT, 'rb') as fid:
    serialized_graph = fid.read()
    od_graph_def.ParseFromString(serialized_graph)
    tf.import_graph_def(od_graph_def, name='')



label_map = label_map_util.load_labelmap(PATH_TO_LABELS)
categories = label_map_util.convert_label_map_to_categories(label_map, max_num_classes=NUM_CLASSES, use_display_name=True)
category_index = label_map_util.create_category_index(categories)


def load_image_into_numpy_array(image):
  (im_width, im_height) = image.size
  return np.array(image.getdata()).reshape(
      (im_height, im_width, 3)).astype(np.uint8)


# For the sake of simplicity we will use only 2 images:
# image1.jpg
# image2.jpg
# If you want to test the code with your images, just add path to the images to the TEST_IMAGE_PATHS.
PATH_TO_TEST_IMAGES_DIR = 'test_images'
TEST_IMAGE_PATHS = [ os.path.join(PATH_TO_TEST_IMAGES_DIR, 'image{}.jpg'.format(i)) for i in range(1, 7) ]

# Size, in inches, of the output images.
IMAGE_SIZE = (12, 8)



with detection_graph.as_default():
  with tf.Session(graph=detection_graph) as sess:
    # Definite input and output Tensors for detection_graph
    image_tensor = detection_graph.get_tensor_by_name('image_tensor:0')
    # Each box represents a part of the image where a particular object was detected.
    detection_boxes = detection_graph.get_tensor_by_name('detection_boxes:0')
    # Each score represent how level of confidence for each of the objects.
    # Score is shown on the result image, together with the class label.
    detection_scores = detection_graph.get_tensor_by_name('detection_scores:0')
    detection_classes = detection_graph.get_tensor_by_name('detection_classes:0')
    num_detections = detection_graph.get_tensor_by_name('num_detections:0')
    for image_path in TEST_IMAGE_PATHS:
      image = Image.open(image_path)
      # the array based representation of the image will be used later in order to prepare the
      # result image with boxes and labels on it.
      image_np = load_image_into_numpy_array(image)
      # Expand dimensions since the model expects images to have shape: [1, None, None, 3]
      image_np_expanded = np.expand_dims(image_np, axis=0)
      # Actual detection.
      (boxes, scores, classes, num) = sess.run(
          [detection_boxes, detection_scores, detection_classes, num_detections],
          feed_dict={image_tensor: image_np_expanded})
      # Visualization of the results of a detection.
      vis_util.visualize_boxes_and_labels_on_image_array(
          image_np,
          np.squeeze(boxes),
          np.squeeze(classes).astype(np.int32),
          np.squeeze(scores),
          category_index,
          use_normalized_coordinates=True,
          line_thickness=8)
      plt.figure(figsize=IMAGE_SIZE)
      plt.imshow(image_np)

Answer 1

PATH_TO_LABELS = os.path.join('data', 'oid_bbox_trainable_label_map.pbtxt')

应该是

Observable<ProductsResponse> products =  restApiFactory.getProductService().getProducts(CategoryID)

Tensorflow对象检测UnicodeEncodeError

1 个答案: